Hair loss

Alternative Names

Loss of hair; Alopecia; Baldness; Telogen effluvium

Definition of Hair loss

Partial or complete loss of hair is called alopecia.


Michael Lehrer, MD, Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, Pa. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. – 5/7/2009

Hair follicle
Ringworm, tinea capitis - close-up
Alopecia areata with pustules
Alopecia totalis - back view of the head
Alopecia totalis - front view of the head
Alopecia, under treatment
Trichotillomania - top of the head
Folliculitis, decalvans on the scalp

ADAM Medical Encyclopedia

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